Skip to Content
MilliporeSigma
All Photos(3)

Key Documents

398225

Sigma-Aldrich

Gallic acid monohydrate

ACS reagent, ≥98.0%

Synonym(s):

3,4,5-Trihydroxybenzoic acid monohydrate

Sign Into View Organizational & Contract Pricing


About This Item

Linear Formula:
(HO)3C6H2CO2H · H2O
CAS Number:
Molecular Weight:
188.13
Beilstein/REAXYS Number:
2050274
EC Number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.21

grade

ACS reagent

Quality Level

assay

≥98.0%

form

powder

impurities

≤0.01% insolubles

ign. residue

≤0.005%

mp

252 °C (dec.) (lit.)

anion traces

sulfate (SO42-): ≤0.02%

SMILES string

OC(=O)c1cc(O)c(O)c(O)c1

InChI

1S/C7H6O5/c8-4-1-3(7(11)12)2-5(9)6(4)10/h1-2,8-10H,(H,11,12)/p-1

InChI key

LNTHITQWFMADLM-UHFFFAOYSA-M

Looking for similar products? Visit Product Comparison Guide

General description

Gallic acid monohydrate is a phenolic acid. A study of its crystalline structure reveals that it is planar with two intramolecular hydrogen bonds and five intermolecular hydrogen bonds. Gallic acid is of significant importance because of its antioxidant and anti-cancer activities. Infrared and Raman spectral studies of gallic acid have been reported.

Application

Gallic acid monohydrate may be used as a standard in the photometric determination of total phenolics content by Folin-Ciocalteu method.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 2

flash_point_f

482.0 °F - closed cup

flash_point_c

250 °C - closed cup

ppe

dust mask type N95 (US), Eyeshields, Gloves


Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Vibrational spectroscopic study on the quantum chemical model and the X-ray structure of gallic acid, solvent effect on the structure and spectra.
Billes F, et al.
Vibrational Spectroscopy, 43(1), 193-202 (2007)
Gallic acid: a versatile antioxidant with promising therapeutic and industrial applications.
Badhani B, et al.
Royal Society of Chemistry Advances, 5(35), 27540-27557 (2015)
Antioxidant properties and total phenolics content of green and black tea under different brewing conditions.
Liebert M, et al.
European Food Research and Technology, 208(3), 217-220 (1999)
A third monoclinic polymorph of 3, 4, 5-trihydroxybenzoic acid monohydrate.
Demirtas G, et al.
Acta Crystallographica Section E, Structure Reports Online, 67(6), o1509-o1510 (2011)
Ulyana Muñoz Acuña et al.
Journal of natural products, 73(11), 1775-1779 (2010-10-30)
Two new polyisoprenylated benzophenones, 32-hydroxy-ent-guttiferone M (1) and 6-epi-guttiferone J (2), along with seven known compounds, 6-epi-clusianone (3), guttiferone A (4), xanthochymol (5), guttiferone E (6), isoxanthochymol (7), (+)-volkensiflavone (8), and (+)-morelloflavone (9), were identified from the seeds and rinds

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service